package My::Schema;

use strict;
use warnings;

use DBIx::Class::Schema::Loader qw/ make_schema_at /;

my $dsn = 'dbi:SQLite:./testdb';

make_schema_at(
    'My::Schema',
    {   debug          => 0,
        dump_directory => './lib',
    },
    [ $dsn, '', '' ],
);

my $schema = My::Schema->connect( $dsn, '', '', '' );

my @relationships = $schema->source('T')->_relationships();

#...

1;